Goodwill and Other Intangible Assets (Details 4) (Customer Relationships, USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Intangible assets
Gross Balance	$ 443.3	$ 441.4
Estimated useful life 5 years
Intangible assets
Estimated useful life	5 years
Gross Balance	13.7	13.7
Estimated useful life 9 years
Intangible assets
Estimated useful life	9 years
Gross Balance	15.5	14.8
Estimated useful life 10 years
Intangible assets
Estimated useful life	10 years
Gross Balance	10.2	10.2
Estimated useful life 12 years
Intangible assets
Estimated useful life	12 years
Gross Balance	62.1	62.1
Estimated useful life 15 years
Intangible assets
Estimated useful life	15 years
Gross Balance	39.1	39.1
Estimated useful life 16 years
Intangible assets
Estimated useful life	16 years
Gross Balance	48.7	48.7
Estimated useful life 17 years
Intangible assets
Estimated useful life	17 years
Gross Balance	21.7	21.5
Estimated useful life 18 years
Intangible assets
Estimated useful life	18 years
Gross Balance	101.7	101.7
Estimated useful life 19 years
Intangible assets
Estimated useful life	19 years
Gross Balance	22.9	21.9
Estimated useful life 20 years
Intangible assets
Estimated useful life	20 years
Gross Balance	75.0	75.0
Estimated useful life 21 years
Intangible assets
Estimated useful life	21 years
Gross Balance	$ 32.7	$ 32.7